New Criteria for Judging Generalized Strictly Diagonally Dominant Matrix

Generalized strictly diagonally dominant matrices play a wide and important role in computational mathematics, mathematical physics, theory of dynamical systems, etc.But it is difficult to judge a matrix is or not generalized strictly diagonally dominant matrix.In this paper, by using the properties of α-chain diagonally dominant matrix, we obtain new criteria for judging generalized strictly diagonally dominant matrix, which enlarge the identification range.

块H-矩阵新的判定条件

研究了非奇异块H-矩阵的判定问题,利用广义块α1-严格对角占优矩阵的定义,块α1-严格对角占优定理,使用反证法和构造性证明法,得到了非奇异块H-矩阵新的判据。

广义对角占优矩阵的某些新准则

在引理１ 、引理２ 的基础上给出某些广义对角占优矩阵的判定规则．

非奇异H矩阵的一些新简捷判据

给出了非奇H矩阵的一些新的简捷判据,推广了以往结果.

块α-对角占优矩阵的等价表征及应用

给出了严格块α-对角占优矩阵的等价表征,进而得到了广义严格块对角占优矩阵的实用判据,作为应用给出了严格块α-对角占优矩阵的谱包含域。